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Heredity & Genetics

DefinitionTerm
The study of heredity. genetics
The passing of genetic traits from parent(s) to offsring or one generation to the next. heredity
The genetic information found in cells that is passed from parent(s) to offspring made up of two twisted strands. "double helix". DNA
Reproduction that allows genetic information to be passed from parents to offspring and requires the sex cells. sexual reproduction
The male sex cell that has 23 chromosomes. sperm
The female sex cell that has 23 chromosomes. egg
The process in which the sperm joins the egg to form a zygote. fertilization
Structure found in the nucleus of a cell that contains genetic information (DNA). chromosome
A part/segment of DNA genes
Alternate form of a gene or one gene from the pair of genes. allele
The set of genes carried by the organism. genotype
The physical expression of the genes. phenotype
Characterisitics that are passed from parent to offspring. inherited traits
Characteristics an organism develop through interaction in their environment. acquired traits
The version of a trait that will be expressed regardless of the other allele(s) that is(are) present. dominant trait
The version of a trait that will only be expressed if two recessive alleles are present. recessive trait
Means the offspring has two copies of the dominant allele (trait) or two copies of the recessive allele (traits). homozygous
Means the offspring has one copy of the dominant allele (trait) and one copy of the recessive allele (trait). heterozygous
Type of cell that doesn't have a nucleus and its genetic material floats around in the cell. prokaryotic
Type of cell that has genetic material enclosed in a nucleus. eukaryotic
Created by: Westview7G
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